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This is kinda cool, from Paul Tan's detailed powertrain piece:

http://paultan.org/2015/10/19/2016-...litre-vtec-turbo-engine-and-cvt-transmission/

Both engines also adopt pistons with a “cavity-shaped” and optimised skirt design to minimise vibration and increase operating efficiency. Lightweight steel connecting rods are heat-forged in one piece for higher strength as well. A new grinding process known as plateau honing further lowers the friction level between the pistons and cylinders, along with the use of low viscosity 0W-20 oil. Additionally, regular (US-grade) unleaded 87 octane petrol can be used on both engines.
 

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Wait, isn't VTEC in the 1.5??

Two in-line four-cylinder engines with dual overhead cams (DOHC) and VTC (Variable Valve Timing Control) are available: a base 2.0 litre naturally-aspirated motor and a 1.5 litre turbocharged unit.
I'm confused.
 

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Honda says:
…The all-new base engine is a 2.0-liter 16-Valve DOHC i-VTEC®…
2.0-Liter In-Line 4 Cylinder
Related to the European Civic Type-R 2.0 liter turbo charged engine, the Civic's new standard 2.0-liter i-VTEC powerplant produces more horsepower and torque at all operating speeds compared to the 1.8-liter engine it replaces. The new engine also is anticipated to help the Civic receive superior EPA MPG ratings.6 The new 2.0-liter engine is rated at 158 horsepower at 6,500 rpm1 and 138 lb-ft. of torque at 4,200 rpm.2 The anticipated EPA fuel economy rating is 27/40/31 mpg6 city/highway/combined with 6-speed manual transmission, and 31/41/35 mpg6 with CVT.
Turbocharged 1.5-Liter In-Line 4 Cylinder
The Civic's available new DOHC 1.5-liter engine is the first turbocharged engine ever to be offered in a Honda-brand automobile in America. With direct injection, low-inertia Mono scroll turbo system with electrical waste-gate and dual Variable Valve Timing Control (VTC), the turbocharged Civic powerplant develops the horsepower and torque of a much larger engine, and is anticipated to help the Civic receive excellent EPA estimated fuel economy ratings.
 
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